Copilot is an amazing bit of technology. If I want to sum a column in Excel, instead of going through the rigamarole of typing "=SUM(C1:C10)" I simply ask "Add all the cells from C1 to C10" and once I've waited 30 seconds for it to do C1+C10, I ask "Add all the cells from cell C1 to cell C10, include all cells between. Do not ignore any cells. Put the answer in cell C11", and 30 seconds later it'll reply "Sure! Use the function =SUM(C1:C10). This will sum up all values between C1 and C10,".